Lesson Slideshow Section 01
Unit Summary Section 02
Key Concepts
Lewis Acids/Bases, Weak Acid/Base pH, Titration Curves, Buffer Calculations
Assessment Objectives
Sketch complex titration curves, Calculate buffer pH using Henderson-Hasselbalch
Prior Knowledge Needed
Equilibrium, stoichiometry, hydrogen ion structure
IB Syllabus Reference
R3.1
Interactive Study GuideClick here to view the full, detailed topic summary for this unit.
29
Cu
63.546
Video Lesson Section 03
HL Video Lessons
2 Extensions Available
Lewis Acids_Ka [HL]
Salt Hydrolysis_Buffers [HL]
Practice Quiz Section 04 · Interactive
10
Ne
20.180
Vocabulary Review Section 05
Lewis Acid
An electron-pair acceptor.
Lewis Base
An electron-pair donor.
Acid Dissociation Constant ($K_a$)
The equilibrium constant for the dissociation of a weak acid.
Equivalence Point
Point in a titration where stoichiometrically equivalent amounts of acid and base are mixed.
pKa / pKb
The negative logarithm of the dissociation constants; lower values indicate stronger acids/bases.
Buffer Region
The region in a titration curve where the solution acts as a buffer.
Henderson-Hasselbalch Equation
Equation relating pH, pKa, and the concentrations of an acid and its conjugate base.
26
Fe
55.845
Revision Notes Section 06
79
Au
196.967
Practice Tests Section 07
17
Cl
35.45
Worksheets & Labs Section 08